5443168261 has 2 divisors, whose sum is σ = 5443168262. Its totient is φ = 5443168260.

The previous prime is 5443168259. The next prime is 5443168271. The reversal of 5443168261 is 1628613445.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3710028100 + 1733140161 = 60910^2 + 41631^2 .

It is a cyclic number.

It is not a de Polignac number, because 5443168261 - 2¹ = 5443168259 is a prime.

Together with 5443168259, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5443168231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2721584130 + 2721584131.

It is an arithmetic number, because the mean of its divisors is an integer number (2721584131).

Almost surely, 2^5443168261 is an apocalyptic number.

It is an amenable number.

5443168261 is a deficient number, since it is larger than the sum of its proper divisors (1).

5443168261 is an equidigital number, since it uses as much as digits as its factorization.

5443168261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 138240, while the sum is 40.

The square root of 5443168261 is about 73777.8304167316. The cubic root of 5443168261 is about 1759.0732316208.

The spelling of 5443168261 in words is "five billion, four hundred forty-three million, one hundred sixty-eight thousand, two hundred sixty-one".